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Old 12-18-2013, 07:14 AM
svtwin73 svtwin73 is offline
Ford Tough
 
Join Date: Dec 2010
Posts: 310
Default Re: 4.0 knocking and clicking noise

Mine sounds like a diesel every now and then. I was told it's carbon interference and to drive at an rpm over 3000 for about 10 minutes and use a good Techron cleaner. It helps, but always comes back.
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1998 Ranger Supercab 4.0L, Medium Metallic XLT, auto, painted valve covers (10 HP), 30x9.5/15.

2008 Mustang GT, stroked 5.0 3v, RGR cams, R2300 S/C, suspension, Kooks LTs w/HF cats GT500 TB, Flowmaster cat-back exhaust, GT500 fuel pump setup.
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